Cite

[Young lady and gentleman descending steps, near pond] [art original].

MLA

Dighton, Robert, 1752-1814, artist. [Young lady and gentleman descending steps, near pond] [art original].. [after 1780?]. https://collections.library.yale.edu/catalog/10723230.

APA, 6th edition

Dighton, Robert, 1752-1814, artist. ([after 1780?])[[Young lady and gentleman descending steps, near pond] [art original].]. https://collections.library.yale.edu/catalog/10723230.